The different rates of antibody formation with agalsidase alfa and agalsidases beta are often attributed to differences in techniques used to measure antibody formation. However, other factors such as host, structural similarity of the infused protein and tertiary structural difference such as glycosylation may lead to differences in the immune response. Among the factors that may affect host response are also the dose and the infusion frequency. Although agalsidase alfa and beta are derived from the same complementary DNA sequence there are minor differences in glycosylation patterns, and different dosing is used, 0.2 mg per kg every other week for agalsidase alfa, 1.0 mg per kg for agalsidase beta.